The Dynaco Dynakit ST70 Stereo Amplifier Restoration Project

Dive into the third part of the Dynaco Dynakit ST70 stereo amplifier restoration project in this 28-minute video. Learn how to carefully install output transformers, ensuring proper alignment and symmetry. Observe the process of soldering transformer connections to output jacks and EL34 sockets. Discover color-coding techniques for different circuits within the amplifier, including bias circuits and grounds. Follow along as the electrolytic capacitor is polished and installed in the new chassis. Witness the wiring process for the capacitor, starting from the rectifier. Participate in smoke tests and learn how to take crucial measurements, including bias circuit testing and AC ripple inspection. Gain insights into DC measurements using a 5AR4 tube and understand the significance of unladen rectifier output values in this detailed tutorial on vintage audio equipment restoration.